Plow-standard cap



(No Model.)

B. S. HARTMAN.

PLOW STANDARD GAP.

Patented Mar. 5, 1889 lTE STATES PATENT OFFICE.

EDWARD HARTMAN, OF ALLEGHENY, PENNSYLVANIA.

PLOW-STAN DARD CAP.

SPECIFICATION forming" part of Letters Patent No. 398,831, dated March 5, 1889.

Application filed December 14, 1888. fierial No. 293,540. (No motleld To all whom it 'litcty concern.-

Be it known that I, EDWARD S. HARTMAN, a citizen of the United. States of America,

residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Plow-Standard Caps, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to plows; and the objects of my improvement are to provide a light,strong,durable,inexpensivaand rapidlyproduced cap of suitably-bent sheet metal to unite the standard to the beam of a plow. I accomplish these objects by the construction illustrated in the accompanying drawings, in Which Figure 1 is a side view of a portion of a plow-beam and standard united by a standardcap constructed in accordance with my invention. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a transverse section of the same. Fig. at is a perspective view of the standard-cap turned upside down. Fig. 5 is a top view of a sheet-metal blank from which the improved standard-cap is produced.

Heretofore the caps of plow-standards have generally been made of cast-iron, lacking in tensile strength, although comparatively heavy and expensive to carry by mail or ex press, these modes of transportation being generally used by farmers when breakage oci edge of the mortise (7, either on account of curs during very busy seasons. The purpose of my invention is to remove these obj ectionable features.

In the drawings an ordinary plow-beam is represented at A and its standard at B.

These parts are securely united by means of the standard cap D and bolts a, passing through vertical perforations d in the ends of 1 said cap and through the beam, with nuts 0 bearing upon said beam. A bolt, 0, passes also horizontally through perforations (Z in the sides of said cap and through the upper end of the standard. T 1e cap D consists of sheet T metal preferably Bessemer steelsuitably bent, folded, and twisted to impart thereto the strength required of said cap to withstand the strain produced upon it by the beam and the standard.

To produce a standard-cap of this construction a sheetnnetal blank of suitable thickness (approximately one-eighth of an inch) is cut or stamped in the form shown in Fig. 5, having two side lugs to form the cheeks d of the cap. Centrally in said blank a mortise, C1 is cut in the form of a parallelogram corresponding with the size of the standard it is to receive, and a perforation, (Z is also made in each side lug or check, (Z for the reception of the standard-retaining bolt e. The blank is then placed in a press having a mandrel that enters the mortise d and retains it in proper position upon said press. The two long edges of the blanks are then bent up against a teinplet 011 the lines shown dotted at f in Fig. 5. The teinplet is then removed and the turned-up edges adjacent to the two ends are forced down and folded at (Z upon the axial or main portion of the blank; but, as the central port-ion or mortise, (1", still con tains the mandrel, the cheeks (1 remain standing against it at an angle of ninety degrees to the body of the blank, and as a short twistis formed on the front and rear ends of the cheeks where they join at c the llat folded portion (Z said twisted portion of the cheeks constitutes supports for the front and rear edges of the standard if its upper end should happen to be below the under surface of the carelessness in uniting the parts, or on account of wear or looseness of the transverse boltin the bolt-holes d of the cheeks. The cheeks of the cap are shown inclined rearwardly in the drawings to correspond with the form preferred for the standard; but if the upper end of the standard is made Ito stand vertically the angle given to the cheeks of the cap would also be vertical.

Having now fully described my invention,

I claim- 1. A plow-standard cap consisting of sheet metal having its long edges bent, the two ends of said bent edges folded upon the body 1 thereof, and projecting cheeks between said two ends, the inner end of said cheeks being twisted, substantially as and for the purpose described.

plow-standard with a standard-cap consisting' of a sheet-metal blank having its two longest edges provided with lugs and said lugs bent and twisted to embrace the plowstandard, substantially as and for the purpose described.

In testimony whereof I aflix niysig natu re in presence of two Witnesses.

EDVARD S. HARTMAN.

2. The combination of a plow-beam and a \Vitnesses:

GEO. CORDE, SILAS S. BROWN. 

